County Mayo has a temperate climate influenced by the Gulf Stream which moderates the weather; consequently Mayo does not suffer from the extremes of temperature experienced by many other countries at similar latitude. Generally summers are warm, rarely hot and winters are quite mild.
In the summer, daylight can last for eighteen hours and this gives unforgettable bright skies at night while in the winter nights are long and days are very short.
The temperatures are generally around 10°C in Spring and Autumn, from 14°C to 16°C in summer and between 4°C and 7°C in winter, but sometime they can be unpredictable: cold in July, warm in September ('Indian summers' can occur) and in January.
For regional forecast, please consult www.met.ie